Image analysis – Image enhancement or restoration – Variable threshold – gain – or slice level
Patent
1994-11-30
1996-06-04
Mancuso, Joseph
Image analysis
Image enhancement or restoration
Variable threshold, gain, or slice level
G06K 938
Patent
active
055240690
ABSTRACT:
An original density picture is produced from an input color picture, a pixel in a background area is designated and the density of the designated pixel is used as a reference density. A background density picture is produced by processing the original density picture with the reference density. Or a background density picture is produced by filtering the original density picture through low pass filter means. By subtracting the background density picture from the original density picture, a characteristic figure superimposed on a background scenery is extracted.
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Del Rosso Gerard
Mancuso Joseph
NEC Corporation
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